Sony XR-CA670X Service Manual page 24

XR-CA670X
Pin No. Pin Name
45 I2CSIO
46
NCO
47 I2CCKO
48 STB
49
NCO
50 ATT
51 NCO
52 AMSON
53 N_ROUT
54
MTLON
55 TAPATT
56
NCO
57 AMSIN
58 NCO
59 VOLATT
60 to 64
NCO
65
FLASH_W
66 TESTIN
67 RC_IN1
68 to 70
NCO
71
DIAG
72
TUATT
73 NCO
74 EE_SIO
EE_CKO
75
76, 77 NCO
78 DOORSW
79 DOORIND
80, 81 NCO
82 AD ON
83
NCO
84 REL_T
85 POS3
86 POS2
87 POS0
88 POS1
24
I/O
I/O
Two-way data bus with the tuner unit and electrical volume
O Not used
O
Serial data transfer clock signal output to the tuner unit and electrical volume
Standby on/off control signal output to the power amplifier
O
"L": standby mode, "H": amplifier on
O Not used
O Audio line muting on/off control signal output "H": muting on
O Not used
Tape auto music sensor control signal output
O
"L": auto music sensor on
Forward/reverse control signal output
O
"L": reverse direction, "H": forward direction
METAL control in/out terminal
At initial mode: valid/invalid selection input of METAL function (valid at "L" input)
I/O
At normal mode: METAL on/off control signal output
(METAL on at "H" output)
Tape muting on/off control signal output "H": muting on
O
Active at ATA, FF/REW mode
O Not used
Whether a music is present or not is detected at auto music sensor
I
"L": music is present, "H": music is not present
O Not used
O Pre amplifier muting on/off control signal output to the electrical volume "L": muting on
O Not used
Internal flash memory data write mode detection signal input terminal "L": data write mode
I
Not used
I Setting terminal for the test mode "L": test mode, normally fixed at "H"
I Rotary remote commander shift key input terminal "L": shift key on
O Not used
I State input from power amplifier
O Tuner muting on/off control signal output to the tuner unit "L": muting on
O Not used
I/O Two-way data bus for tuner EEPROM with the tuner unit
O
Two-way bus clock signal for tuner EEPROM with the tuner unit
O Not used
I Front panel open/close detection signal input "L" is input when the front panel is closed
LED drive signal output of the cassete tape slot illumination and Z indicator
O
"H": LED on "H" is output to turn on the LED when front panel is opened
O Not used
A/D converter power control signal output
O When the KEYACK (pin wh) that controls reference voltage power for key A/D conversion input
is active, "L" is output from this terminal to enable the input
O Not used
Rotation detection signal input from supply reel sensor and take-up reel sensor on the mechanism
I
deck
I
Tape position (EJECT/FF/REW/REV/
I
FWD mode) detect input from the tape
I
operation switch on the deck mechanism
I
Description
POS3: "L": REV and EJECT mode, "H": others mode
POS2: "L": REW mode, "H": others mode
POS0: "L": EJECT mode, "H": others mode
POS1: "L": PLAY and FF in FWD mode, and REW
in REV mode, "H": others mode